using values from a properties-file in setHeader-method

[Christoph Burmeister]

hi,

how can I set a header with a value from a properties-file using
spring-xml?
Doing this with the const-tag is no problem, but then the value has to be
directly written in the camel.xml:

<setHeader>
   <const>foobar</const>
</setHeader>

I like to use something like this:

environment.properties:
-----------------------------
header.value=foobar

camel.xml
---------------
<beans>
   <bean id="placeholderConfig"

class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>environment.properties</value>
                <value>another-file.properties</value>
            </list>
        </property>
    </bean>


    <route>
     ...
         <setHeader>
                 ${header.value}
         </setHeader>
      ...
    </route>
</beans>

Is there a solution for camel 2.7 ?

best,
christoph